The AIDS is a fatal disease caused by the retrovirus known as Hummun immuno deficiency virus(HIV).This virus breaks the immunity system of the body.AIDS refers only to the last stage of HIV infection. It is also called a modern pandemic effecting both industrialized and developing countries.The AIDS was first recognized in USA in 1981.HIV was earliness known as human T-cell lymphotropic virus 3.It has a protein capsule.The genome of this virus is diploid.it is composed of 2 identical RNA copies.Reverse transcriptase enzyme is the characteristic feature of retro virus.The he virus remains in the body once it is infected.The modes of transmission of this virus are transfusion of infected blood, use of contaminated needles and syringes, and also by the use of contaminated razors.This virus can also be transmitted by sexual intercourse with the infected identity, artificial insemination and by organ transplantation.This cannot be acquired by crowd transport and shaking hands and kissing etc..The AIDS virus consist of glycoprotien ceat ,double layer of lipid membrane and two protein protein bands.It also contain RNA and reverse transcriptise enzyme. The human chromosome get inserted by the DNa copy of HIV and this replicates the DNA cell..This results in the infection of the virus particles in the new T-helper cells. .The major symptoms of aids includes fever , lethargy , pharyngitis, naucea and headache..The AIDS can be diagnosed by ELIZA TEST.The incubation period of AIDS is between six months to ten years .
In one of the most important medical breakthroughs, scientists have given hope for an effective AIDS Vaccine. They have demonstrated the binding action of two healthy antibodies that combine to resist the entry of HIV virus into healthy cells.
The scientists studied 2F5 and 4E10 the two powerful antibodies against HIV, which neutralize antibodies, in the sense that they can block varies strains of the HIV virus.
They achieve it by binding to part of the outer protein coating next to viral membrane that opens up and is exposed to the antibodies for some minutes during the process of cell fusion and infection.
But the difficulty in controlling the infection is that such antibodies are rare in HIV infection and the present experimental vaccines have been unable to produce such antibodies. Let’s hope for healthy world .
AIDS is the short form of Acquired Immune Deficiency Syndrome. The term acquired means , that are not present at birth. The deficiency of immune system means , the immune system in the body do not work properly , the disease resistance power of body declined. AIDS in not a disease it is syndrome, a syndrome is the technical name of group of symptoms. The AIDS first reported in Los Angeles in 1981. the pathogen causing aids is hiv virus, it was first find by luc montagnier in 1983. hiv come under retrovirus, it frequently change it s genetic material RNA to DNA . the enzyme help for this transformation is reverse trascriptase.
AIDS is transmits from one person to another through unprotected vaginal and anal intercourse, non secured blood transfusion., shared use of needles, one important point is to be noted that hiv virus not transmits through mosquito bite. Mosquito’s cannot act as a vector for Aids.
symptoms of aids
Decrement the count of T lymphocyte in immune system . it leads to mal functioning of immune systems. The major point is to be remember is that no treatment is available to cure AIDS. So “prevention is better than cure”.
